Underground-conduit railway



(No Mpdel.) zshe'ets--sheet 1.

W. P. JENKINS. UNDERGROUND GONDUIT RAILWAY;

No. 517,749. Patented Apr. 3, 1894.

` ATTORNEYS.

ma NA'rlonAL umuanrmm ewPANY.'

wnmmaou. a. c.

W. I'. JENKIIIS.` UNDERGROUND coNDUIT RAILWAY.

2' Smets-#Sheet 2.

(No Model.)

No. 517,749; Patented Apr. s, 1894.

Arm/Mfrs.

UNITED STAT-Es'- PMTENT Ori-rca WILTON F. JENKINS, OF RICHMOND, VIRGINIA.

UNDERGROUND-C'ONDUIT RAILWAY.

SPECIFICATION forming part of Letters Patent No. 517,749, dated. April l3, 1894.

Application tiled August 8, 1893.

To all whom tm/ay concern:

Be it known that I, WILTON F. JENKINS, of Richmond, in the county of Henrico and State of Virginia, have invented a new and useful Improvement in Underground Electric Railways, of which the following is a specification.

' traffic in the street.

My invention is in the nature of certain improvements in underground conduit railways, and it consists in a novel Vmeans for connecting the rails to the transverse yokes of the conduit, and in the peculiar construction of the conduit, as will be hereinafter fully described.

Figure l is a transverse section of the conduit and road bed. Fig. 2 is an enlarged side view, and Fig. 3 an end view of the connection between the rails and conduit yoke, and

Fig. 4 is a partly side view and partly longitudinal section of the conduit.

In the drawings A represents the conduit which is cast in one piece as a-cylindrical tube about eighteen inches in diameter with a slot at its upper side. The edges of thetube adjoining the slot are formed in a peculiar manner. That is to say, they are cast with a wall a forming the slot, a horizontal overhanging flange b, and wings or web sections c connecting at intervals the overhanging iange to the body ofY the tube, as shown in Figs. l and 4, so as to give the requisite stiffness to lthe overhanging flange to resist the weight of To this overhanging flange b is permanently riveted a wrought iron or'steell slot plate Awhose upper surface is suitably roughened to prevent the slipping ot teams. The object of forming the conduit cylinder with the wall a, overhanging fiange b, and stiftcning webs c, is to give a vertical distance from'the topof the slot rail to the outer periphery of the cylinder suficient to allow blocks of stone or other paving material to be laid in suticient vertical depth close up to the slot rail, so as to make a substantial nish.

E is one of the yokes which passes .under the bottom of the cylindrical conduit A, and at its outerends is connected with the track rails. This yoke is made of wrought or cast iron bars which have a T-shaped cross section. yNear each end of these yokes there is formed in one of its horizontal flanges a slot c, and projecting horizontally from the lower much time, trouble, and expense.

sesam. 482.641. (No model.)

edge of the vertical Iiange are twoj uxtaposed lugs d d. F is a metal clamp having at its upper end two claws adapted to clutch the base of the rail and having in the middle a downwardly projecting central sc'rew stem fwithv nut g. This clamp Fisadjusted to the yoke laterally with one claw extending through the slot e in the yoke, and the other claw overlapping the end of the yoke, and the two claws clamping the base ofY the rail on opposite sides of the same. The screw stem f tits between the lugs d d, and whenthe nutg isftightened, by screwing Vit up against the lugs d d, it draws the claws of the clamp F .tightly down and firmly holds the rail to the' yoke. This connection, it will be seen, requires no corresponding `holes in the base of the rail and yoke, and no bolts, and which holes are objectionable for the reason that the holesl in the rail rarely coincide accurately with the holes in the yoke, and require to be fitted or adjusted toeach other at a cost of The con` nection describedby me is a universal one, permitting the fastening of the yoke to the rail at any point along the length of ytherail, andas close together or as far apart as may bedesired, and without the expense and delay of adjusting the holes and fitting bolts therein.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-" l. In an underground railway system, the combination of a conduit, yokes passing under the' conduit, longitudinal surface rails resting upon the ends of the yokes at right angles and a downwardly drawing screw clamp connection provided with double claws for grasping both sides of the rail base and adapted to be applied laterally to the yoke for fastening ythe yokes to the rails at any point along their length without theuse of bolts substantially as shown and described.

2. The double-clawed `clamp F having central screw stem f depending therefrom with nut g; in combination with the yoke arranged transversely beneath the rail and provided with the slot e for the passage of one of the claws, and lugs d d as a bearing for the screw nut, substantially as and for the purpose described.

ICO

3. The cylindrical cast iron conduit having l paving matex'ial substantially as shown and a longitudinal slot With a slot Wall a, horizondescribed. tal overhanging nnge b, Webs c uniting the T i i T T flange to the exterior of the conduit, and a. WILTOL I" JEBKHS 5 surface slot plateA for givinga vertical depth Witnesses:

between the slot plete and curved external O. F. VEISIGER, J 1'.,

surface of the conduit sufficient to receive V. A. HARVEY. 

